Could have had hard landing maybe and jarred something off main board ,sounds like you have to get in side to check everything ,not sure if gimble ribbon cable gone bad but would not surprise me
Also where gimble clips into board might have broken conection in the board which also happens which could be no power to gimble which make for cant link ,and just mention ribbon cables can go bad without any crashing involved,
Unsure what really to advise apart from stripping gimble to check boards and cables , if it flew previous and just got stored , I'd try ribbon cable set , but original parts only,cheap knock offs wont work